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An optical/near-infrared survey of GCs in early-type galaxies

  • A. L. Chies-Santos (a1), S. S. Larsen (a1), E. M. Wehner (a1), H. Kuntschner (a2), J. Strader (a3), J. P. Brodie (a4) and J. F. C. Santos (a5)...

Abstract

Optical/near-infrared observations of 14 globular cluster (GC) systems in early-type galaxies are presented. We investigate the recent claims (Yoon et al. 2006) of colour bimodality in GC systems being an artefact of the nonlinear colour–metallicity transformation driven by horizontal-branch morphology. Taking advantage of the fact that the combination of optical and near-infrared colours can, in principle, break the age/metallicity degeneracy we also analyse age distributions in these systems.

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References

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An optical/near-infrared survey of GCs in early-type galaxies

  • A. L. Chies-Santos (a1), S. S. Larsen (a1), E. M. Wehner (a1), H. Kuntschner (a2), J. Strader (a3), J. P. Brodie (a4) and J. F. C. Santos (a5)...

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